Spring clamp



FIG. 1 is a perspective view of a spring clamp showing our new design;

FIG. 2 is a top plan view thereof, the bottom being identical;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a right end elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a left end elevational view thereof;

FIG. 7 is a perspective view of a second embodiment of the design of FIG. 1;

FIG. 8 is a top plan view of FIG. 7, the bottom being identical;

FIG. 9 is a front elevational view of FIG. 7;

FIG. 10 is a right end elevational view of FIG. 7;

FIG. 11 is a rear elevational view of FIG. 7;

FIG. 12 is a left end elevational view of FIG. 7. 

The ornamental design for spring clamp, as shown and described. 